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Dissolution of enzyme-treated cellulose using freezing thawing method and the properties of fibres regenerated from the solution

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Dissolution of enzyme-treated cellulose using freezing thawing method and the properties of fibres regenerated from the solution. / Vehviläinen, Marianna; Kamppuri, Taina; Gronqvist, Stina; Rissanen, Marja; Maloney, Thaddeus; Honkanen, Mari; Nousiainen, Pertti.

In: Cellulose, Vol. 22, No. 3, 06.2015, p. 1653-1674.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

Vehviläinen, M, Kamppuri, T, Gronqvist, S, Rissanen, M, Maloney, T, Honkanen, M & Nousiainen, P 2015, 'Dissolution of enzyme-treated cellulose using freezing thawing method and the properties of fibres regenerated from the solution', Cellulose, vol. 22, no. 3, pp. 1653-1674. https://doi.org/10.1007/s10570-015-0632-0

APA

Vehviläinen, M., Kamppuri, T., Gronqvist, S., Rissanen, M., Maloney, T., Honkanen, M., & Nousiainen, P. (2015). Dissolution of enzyme-treated cellulose using freezing thawing method and the properties of fibres regenerated from the solution. Cellulose, 22(3), 1653-1674. https://doi.org/10.1007/s10570-015-0632-0

Vancouver

Author

Vehviläinen, Marianna ; Kamppuri, Taina ; Gronqvist, Stina ; Rissanen, Marja ; Maloney, Thaddeus ; Honkanen, Mari ; Nousiainen, Pertti. / Dissolution of enzyme-treated cellulose using freezing thawing method and the properties of fibres regenerated from the solution. In: Cellulose. 2015 ; Vol. 22, No. 3. pp. 1653-1674.

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@article{6d48e6e081ae438b91e3e462277f6866,
title = "Dissolution of enzyme-treated cellulose using freezing thawing method and the properties of fibres regenerated from the solution",
abstract = "The rapid coagulation of NaOH-based cellulose solution during the wet spinning process leads to a low stretching ratio and, consequently, the low mechanical properties of the fibres. The aim of this work was to slow down the coagulation by replacing the sulphuric acid spin bath with an acetic acid bath. The spin dope was prepared by dissolving the enzyme-treated dissolving pulp in aqueous sodium zincate using a freezing thawing method. The optimal zinc oxide and sodium hydroxide concentrations were studied first. The most thermally stable cellulose solution contained 6.5 wt{\%} NaOH and 1.3 wt{\%} ZnO with 6 wt{\%} enzyme-treated dissolving pulp. The spin dope was prepared accordingly. Coagulation of the cellulose solution slowed down in the acetic acid bath, resulting in a significantly higher stretching ratio for the fibres than with the sulphuric acid bath. However, the acetic acid spun fibres shrunk strongly during drying, and the possibly aligned order of the molecular chains due to the high stretch was partly lost. As a consequence, the high stretch was not transferred to high tenacity of the fibres in this study. However, the result suggests attractive potential to develop processing conditions to increase fibre tenacity.",
keywords = "Cellulose dissolution, Dissolving pulp, Enzymatic treatment, Wet spinning, Regenerated fibres, Biocelsol, NAOH/UREA AQUEOUS-SOLUTION, SODIUM-HYDROXIDE, DISSOLVING PULP, WET-SPUN, TEMPERATURE, MULTIFILAMENT, CARBAMATE, MECHANISM, SYSTEM",
author = "Marianna Vehvil{\"a}inen and Taina Kamppuri and Stina Gronqvist and Marja Rissanen and Thaddeus Maloney and Mari Honkanen and Pertti Nousiainen",
year = "2015",
month = "6",
doi = "10.1007/s10570-015-0632-0",
language = "English",
volume = "22",
pages = "1653--1674",
journal = "Cellulose",
issn = "0969-0239",
publisher = "Springer Verlag",
number = "3",

}

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TY - JOUR

T1 - Dissolution of enzyme-treated cellulose using freezing thawing method and the properties of fibres regenerated from the solution

AU - Vehviläinen, Marianna

AU - Kamppuri, Taina

AU - Gronqvist, Stina

AU - Rissanen, Marja

AU - Maloney, Thaddeus

AU - Honkanen, Mari

AU - Nousiainen, Pertti

PY - 2015/6

Y1 - 2015/6

N2 - The rapid coagulation of NaOH-based cellulose solution during the wet spinning process leads to a low stretching ratio and, consequently, the low mechanical properties of the fibres. The aim of this work was to slow down the coagulation by replacing the sulphuric acid spin bath with an acetic acid bath. The spin dope was prepared by dissolving the enzyme-treated dissolving pulp in aqueous sodium zincate using a freezing thawing method. The optimal zinc oxide and sodium hydroxide concentrations were studied first. The most thermally stable cellulose solution contained 6.5 wt% NaOH and 1.3 wt% ZnO with 6 wt% enzyme-treated dissolving pulp. The spin dope was prepared accordingly. Coagulation of the cellulose solution slowed down in the acetic acid bath, resulting in a significantly higher stretching ratio for the fibres than with the sulphuric acid bath. However, the acetic acid spun fibres shrunk strongly during drying, and the possibly aligned order of the molecular chains due to the high stretch was partly lost. As a consequence, the high stretch was not transferred to high tenacity of the fibres in this study. However, the result suggests attractive potential to develop processing conditions to increase fibre tenacity.

AB - The rapid coagulation of NaOH-based cellulose solution during the wet spinning process leads to a low stretching ratio and, consequently, the low mechanical properties of the fibres. The aim of this work was to slow down the coagulation by replacing the sulphuric acid spin bath with an acetic acid bath. The spin dope was prepared by dissolving the enzyme-treated dissolving pulp in aqueous sodium zincate using a freezing thawing method. The optimal zinc oxide and sodium hydroxide concentrations were studied first. The most thermally stable cellulose solution contained 6.5 wt% NaOH and 1.3 wt% ZnO with 6 wt% enzyme-treated dissolving pulp. The spin dope was prepared accordingly. Coagulation of the cellulose solution slowed down in the acetic acid bath, resulting in a significantly higher stretching ratio for the fibres than with the sulphuric acid bath. However, the acetic acid spun fibres shrunk strongly during drying, and the possibly aligned order of the molecular chains due to the high stretch was partly lost. As a consequence, the high stretch was not transferred to high tenacity of the fibres in this study. However, the result suggests attractive potential to develop processing conditions to increase fibre tenacity.

KW - Cellulose dissolution

KW - Dissolving pulp

KW - Enzymatic treatment

KW - Wet spinning

KW - Regenerated fibres

KW - Biocelsol

KW - NAOH/UREA AQUEOUS-SOLUTION

KW - SODIUM-HYDROXIDE

KW - DISSOLVING PULP

KW - WET-SPUN

KW - TEMPERATURE

KW - MULTIFILAMENT

KW - CARBAMATE

KW - MECHANISM

KW - SYSTEM

U2 - 10.1007/s10570-015-0632-0

DO - 10.1007/s10570-015-0632-0

M3 - Article

VL - 22

SP - 1653

EP - 1674

JO - Cellulose

JF - Cellulose

SN - 0969-0239

IS - 3

ER -